【题文】The sun, the moon and the stars(星星)are all in the sky. We see the moon and the stars at night. The sun is a ball. It’s much bigger than the moon. It gives us heat(热量).The sun has a family. It’s the bigg
1.D.细节理解题.根据文中"The sun,the moon and the stars are all in the sky."可知太阳,月亮和星星都在天空.故选D.2.C.细节理解题.根据文中"It is smaller than the stars."可知It指代The moon,月亮比星星小.故选C.3.A.细节理解题.根据文中"the light from the sun is too bright."可知太阳...
binary starscosmic gasesdistanceTHERE are three distinct types of object in the Solar System-the Sun is a star ; the terrestrial planets (Mercury, Venus, Earth/Moon, Mars) are solid bodies ; and the Jovian planets (Jupiter, Saturn, Uranus, Neptune) are cold gaseous bodies. The nature of ...
So, none followsStatements: All planets are stars All stars are asteroids All asteroids are moons Some moons are rocks Conclusions: I. All asteroids are planets II. All asteroids are stars III. All moons are stars IV Some rocks are stars
恒星和行星的关系如下：1.恒星是由炽热气体组成的，本身能发光的天体。行星是围绕恒星运行的，本身不发光的天体。恒星是由恒星本身的引力形成的，在大气层中有许多固定的发光点，而恒星则是由气体星云引起的引力崩溃而产生的，而气体星云则是由氢、氦和其它元素构成，当恒星的核心浓度达到一定的时候，氢...
A. All the stars are orbited by their own planets.B. We currently have a telescope that can be used to see other planetsC. By a very direct method,the astronomers measured subtle distortions.D. By a very indirect method,the astronomers measured subtle distortions. 相关知识点: 试题来源: ...
s smaller than the stars. The light on the moon comes from the sun. It has no light of its own.心手The stars look smaller than the sun. They look small because they are very far away from us. All day the stars are in the sky. But the light from the sun is too bright. We ...
There are about 200 billion stars in our galaxy Tens of billions of them have earth like planets So even though complex life on earth like planets is only one in a billion It's possible that humans are not alone...
analyzed the Kepler data and showed that approximately half of all sun-like stars host at least one planet between Earth and Neptune in size. These planets, which don’t exist in our solar system at all, seem to make complete orbits around their stars in weeks or months rather than years...
The formation of stars and planets is accompanied not only by the build-up of matter, namely accretion, but also by its expulsion in the form of highly supersonic jets that can stretch for several parsecs1,2. As accretion and jet activity are correlated and because young stars acquire most...